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The grey gene causes progressive depigmentation (fading) of the hair and is considered to be the “strongest” of all coat colour modifying genes.
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Specifications
Breeds | |
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Gene | |
Organ | |
specimen | Hair, Blood EDTA, Blood Heparin, Semen, Tissue |
Mode of Inheritance | |
Chromosome | |
Also known as | |
Year Published |
General information
The grey gene causes progressive depigmentation (fading) of the hair and is considered to be the “strongest” of all coat colour modifying genes. The depigmentation process may last for years, but once the hair is depigmented, the original colour will never return.
Clinical features
A horse that inherits a Grey coat colour can be born in any colour. Often those horses become completely white by the age of 6-8 years, others will keep tiny non-faded spots (also called fleabites).
Additional information
The dominant allele G results in the Grey coat colour and the recessive allele N does not have an effect on the basic colour. The dominant allele G has a duplication of a part of the DNA. The test does not discriminate between horses carrying 1 or 2 copies of the duplication (N/G or G/G). All horses carrying the duplication will turn grey.
Specific breeds are undefined.
References
Pubmed ID: 18641652
Omia ID: 1356